TLM Socket Examples

// Initiator Code
class initiator extends uvm_component;
  seq_item req;
  uvm_tlm_time tlm_delay;
  uvm_tlm_phase_e tlm_phase;
  uvm_tlm_nb_initiator_socket #(initiator, seq_item, uvm_tlm_phase_e) socket_i;
  
  `uvm_component_utils(initiator)
  
  function new(string name = "initiator", uvm_component parent = null);
    super.new(name, parent);
  endfunction
  
  function void build_phase(uvm_phase phase);
    super.build_phase(phase);
    socket_i = new("socket_i", this);
    tlm_delay = new("tlm_delay");
  endfunction
  
  function uvm_tlm_sync_e nb_transport_bw(seq_item req, ref uvm_tlm_phase_e tlm_phase, input uvm_tlm_time tlm_delay);
    `uvm_info(get_type_name(), $sformatf("Received payload =\n%s", req.sprint()), UVM_NONE);
  endfunction
  
  task run_phase(uvm_phase phase);
    super.run_phase(phase);
    req = seq_item::type_id::create("req");
    assert(req.randomize());
    tlm_delay.reset();
    `uvm_info(get_type_name(), $sformatf("send req =\n%s", req.sprint()), UVM_NONE);
    tlm_phase = BEGIN_REQ;
    socket_i.nb_transport_fw(req, tlm_phase, tlm_delay);
  endtask
endclass

// Target Code
class target extends uvm_component;
  uvm_tlm_nb_target_socket #(target, seq_item, uvm_tlm_phase_e) socket_t;
  uvm_tlm_phase_e tlm_phase;
  
  `uvm_component_utils(target)
  
  function new(string name = "target", uvm_component parent = null);
    super.new(name, parent);
    socket_t = new("socket_t", this);
  endfunction
  
  function uvm_tlm_sync_e nb_transport_fw(seq_item req, ref uvm_tlm_phase_e tlm_phase, input uvm_tlm_time tlm_delay);
    `uvm_info(get_type_name(), $sformatf("Received payload =\n%s", req.sprint()), UVM_NONE);
    req.enable = 1;
    tlm_phase = END_REQ;
    socket_t.nb_transport_bw(req,tlm_phase, tlm_delay);
  endfunction 
endclass

// Passthrough Code
class passthrough extends uvm_component;
  seq_item req;
  initiator init;
  uvm_tlm_nb_passthrough_target_socket #(seq_item, uvm_tlm_phase_e) socket_p;
  
  `uvm_component_utils(passthrough)
  
  function new(string name = "passthrough", uvm_component parent = null);
    super.new(name, parent);
  endfunction
  
  function void build_phase(uvm_phase phase);
    super.build_phase(phase);
    init = initiator::type_id::create("init", this);
    socket_p = new("socket_p", this);
  endfunction
  
  function void connect_phase(uvm_phase phase);
    super.connect_phase(phase);
    init.socket_i.connect(socket_p);
  endfunction
endclass